The spinach, green onions, garlic and red peppers in this beef & veggie skillet pack a wallop of vitamin K (which aids in bone health), iron (which helps carry oxygen through the blood), vitamin A (which aids in eye health) and selenium (which boosts metabolism). And, by choosing lean ground beef and brown rice, you’re cutting down on unnecessary fat and sugar. Regularly substituting processed foods with fresh fruits, vegetables and whole grains is a great step in improving your overall health.